If a person with type O blood needed a transfusion, which blood type(s)could be safely used as donor blood?

Question

Quizplus · Accepted Answer

Type O blood is considered the universal donor because it lacks A and B antigens on the surface of its red blood cells, so it won't trigger an immune response when transfused into someone with another blood type. Therefore, for a person with type O blood, only another person with type O blood can donate.

If a Person with Type O Blood Needed a Transfusion